Game card holder



FIG. 1 is a top plan view of the ornamental design for a game card holder;

FIG. 2 is a side view of the game card holder as it would appear when viewed perpendicular to any one of the ten sides;

FIG. 3 is a bottom view of the view shown in FIG. 1; and

FIG. 4 is an isometric view of the ornamental design for a game card holder. 

The ornamental design for a game card holder, as shown. 